Improvement in rotary boilers



UNITED STATES NATHANIEL T. EDSON, OF NEW ORLEANS, LOUISIANA.

IMPROVEMENT IN ROTARY BOILERS.`

Specification forming part of Letters Patent N0. 117,159, dated July 16,1871.

To all whom it may concern:

Be it known that I, NATHANIEL T. EnsoN, of the city of New Orleans,State'of Louisiana,have invented certain Improvements in Rotary Steam-Boilers, of which the following is a specication:

The first pa-rt of my invention relates to revolving boilers, the wholeor the upper part ofthe furnace of which is a station ary boilerprovided with a dome or domes, to which the safety-valve is attached;and it consists in providing a water-supply pipe for the revolvingboiler, connected to the stationary part of the boiler at an elevatedpoint ofthe dome ,by means of which the stationary part ofthe boilerwill be kept full of water if a temporary suspension of its supply takesplace, and an over-supply prevented by its flow off through the pipe tothe revolving part of the boiler below. The second part of my inventionrelates to the furnace of revolving boilers, the upper part of whichfurnace is a stationary boiler; and it consists in providing ahorizontal-division partition at a central part of the revolving boiler,by means of which the flame and heat of the lire are caused to impingeboth upon the upper part of the revolving boiler and against thestationary boiler.

Figure 1 is a perspective view of my steamboiler with a part of thewater-space broken out. Fig. 2 is a vertical section of the same takenthrough the axes.

A is the furnace and water-space inclosurc, composed of a-n outer andinner shell and division-rings O, of such thickness as will furnish adesirable water-space between the shells. B are domes, the lower partsof which furnish water to the inclosure during a temporary suspension ofoperation of the pump or injector, and the upper part of the domes spacefor containingsteam, to the top of which domes the safety-valve andsteam-pipe are attached. C is asteam-pipe leading from the rotary partof the boiler to the dome B, and D is a pipe leading from dome to dome.E is a waterpipe, attached to the dome at a lower level than the pipes Cand I), which pipe E supplies water to the rotary part of the boiler andprevents the water from accumulating or rising above its connection inthe dome. F is the inner and outer shell of the inclosure, to which isconnected the injection and blow-off valves, at G. His the revolvingpart ofthe boiler, which rests by its trunnions L on the ends of thefurnace. K are stays, which are firmly attached to the ends of thefurnace and to the steam and water-pipes C and E at their connectionwith the trunnions L. M is a pipe, to which the water-gauge cock isconnected, and to which, also, a blow-olf valve may be attached, whichpipe M is turned by its handle N to lascertain the quantity of water inthat part of the boiler. O are division-rings that separate the innerand outer shells of the inclosure. Pis the smoke-sta ck. It is a cog,which is firmly attached to the trunnions L, by which the rotary part ofthe boiler is revolved at such a speed as is found to be desirable. S isa bridgewall, a part of which extends forward to the front of thefurnace, thereby causing the flame and heat of the fire to first passback, and then up and forw ard to the smokefstack I). T is a water-gange cock, connected to the lower part of one of the domes, to ascertainif there is sufficient water on starting the fire or after the pump hasstopped working.

I claim as my invention- 1. The water-pipe E, connecting the stationaryand the revolving boiler, substantially as and for the purposeshereinbefore set forth.

2. The division-partition S, substantially as and for the purposes setforth.

Vitnesses: NATHL. T. EDSON.

W. MCC. J oNEs, J oEN T. CASEY.

